1. Andersen, V. S. (1947). Untersuchungen iiber die Biologie und Bekampfung der ObstbaumspinnmilbeParatetranychus pilosusCan. et Fanz. Dissertation Universitat Bonn.
2. Butler, E. A. (1923). A biology of the British Hemiptera-Heteroptera. London.
3. Garman, P. (1923). The European Red Mite in Connecticut apple orchards. Bull. Conn. agric. Exp. Sta., no. 252, 103–25.
4. Garman, P(1953). Mite species from apple trees in Connecticut. Bull. Conn. agric. Exp. Sta., no. 520.
5. Garman, P, andTownsend, J. F. (1938). The European Red Mite and its control. Bull. Conn. agric. Exp. Sta., no. 418.